Multi-CVT drive system having differential epicycle gear set

ABSTRACT

The present invention utilizes the rotary kinetic power of a rotary kinetic power source to directly drive the epicyclic gear set, or to drive the epicyclic gear set through a transmission device, then a continuous variable transmission (CVT) is individually installed between two output shafts of the epicyclic gear set and the load driven thereby, so the wheel set of the driven load is enabled to randomly perform variation of the driving speed ratio and the driving torque, so as to drive the combined common load; between the output ends of the mentioned two continuous variable transmissions, a limited slip differential or a stabilize device composed of a dual shaft connecting device having slip coupling torque can be further installed according to actual needs.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Continuation-In-Part of application Ser. No.13/410,427, filed on Mar. 2, 2012, which is a Continuation-In-Part ofapplication Ser. No. 13/403,198, filed on Feb. 23, 2012.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention provides a multi-CVT drive system having epicyclicgear set, which utilizes the rotary kinetic power of a rotary kineticpower source to directly drive the epicyclic gear set, or to drive theepicyclic gear set through a transmission device, then a continuousvariable transmission (CVT) is individually installed between two outputshafts of the epicyclic gear set and the load driven thereby, so thewheel set of the driven load is enabled to randomly perform variation ofthe driving speed ratio and the driving torque, so as to drive thecombined common load; between the output ends of the mentioned twocontinuous variable transmissions, a limited slip differential or astabilize device composed of a dual shaft connecting device having slipcoupling torque can be further installed according to actual needs, sowhen differential operation is performed between the two loads, thestabilize device can be served to stable the operation of the drivesystem.

(b) Description of the Prior Art

When a conventional single power performs differential driving to two ormore than two of individual loads of a common load body, a differentialwheel set is often used for achieving the function of differentialspeed, the mentioned means has a shortage of not being able to generatethe torque differential between the two loads.

SUMMARY OF THE INVENTION

The present invention provides a multi-CVT drive system having epicyclicgear set, which utilizes the rotary kinetic power of a rotary kineticpower source to directly drive the epicyclic gear set, or to drive theepicyclic gear set through a transmission device, then a continuousvariable transmission (CVT) is individually installed between two outputshafts of the epicyclic gear set and the load driven thereby, so thewheel set of the driven load is enabled to randomly perform variation ofthe driving speed ratio and the driving torque, so as to drive thecombined common load;

The continuous variable transmission of the multi-CVT drive systemhaving epicyclic gear set is individually installed and driven at thewheel sets at two sides of a common load body, and the continuousvariable transmission (CVT) is e.g. structured by continuous variabletransmissions having several structural configurations such as a rubberbelt type, metal belt type, chain type continuous variable transmission,or an electric continuous variable transmission (ECVT), or a frictiondisk type, or a conventional different-shaft type continuous variabletransmission, which includes a continuous variable transmission capableof individually and automatically varying speed ratio along with theloading torque, or a continuous variable transmission capable ofindividually and passively varying speed ratio automatically along withthe driving rotation speed at the input end and/or the loading torque,or a continuous variable transmission utilizing an external operationinterface (MI100) to actively control the speed ratio, so as to performall or a part of the following controls, including: (1) actively andsynchronously controlling the speed ratios of a continuous variabletransmission (CVT100) and a continuous variable transmission (CVT200);(2) actively and individually controlling the speed ratios of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200) to be different for actively controlling theproportion of different speed ratios between individual continuousvariable transmissions;

Between the output ends of the mentioned two continuous variabletransmissions, a limited slip differential or a stabilize devicecomposed of a dual shaft connecting device having slip coupling torquecan be further installed according to actual needs, so when differentialoperation is performed between the two loads, the stabilize device canbe served to stable the operation of the drive system.

According to the present invention, the multi-CVT drive system havingepicyclic gear set can be applied in a vehicle or an industry-used,agriculture-used or specially-designed carrier with front wheel drive,or rear wheel drive, or four wheel drive, or multiple wheel drive ordriven by belts installed at two sides.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view illustrating the common load body (L100)being installed with a first epicyclic gear set (EG101) driven by therotary kinetic power of a rotary kinetic power source (P100), acontinuous variable transmission (CVT100) being installed between a leftend output shaft (1011) of the first epicyclic gear set (EG101) and aleft side wheel set (W100) of the loading end, and a continuous variabletransmission (CVT200) being installed between a right end output shaft(1012) and a right side wheel set (W200), according to one embodiment ofthe present invention.

FIG. 2 is schematic view illustrating a continuous variable transmission(CVT100) and a continuous variable transmission (CVT300) beingindividually installed between left end output shaft (1011) of the firstepicyclic gear set (EG101) of FIG. 1 and the wheel set (W100) at therear left side of the loading end and the wheel set (W300) at the frontleft side, and a continuous variable transmission (CVT200) and acontinuous variable transmission (CVT400) being individually installedbetween the right end output shaft (1012) and the wheel set (W200) atthe rear right side of the loading end and the wheel set (W400) at thefront right side, according to one embodiment of the present invention.

FIG. 3 is schematic view illustrating a continuous variable transmission(CVT100) and a continuous variable transmission (CVT300) and acontinuous variable transmission (CVT500) being individually installedbetween the left end output shaft (1011) of the first epicyclic gear set(EG101) of FIG. 1 and the wheel set (W100) at the rear left side, thewheel set (W300) at the front left side and the wheel set (W500) at themiddle left side of the loading end, and a continuous variabletransmission (CVT200) and a continuous variable transmission (CVT400)and a continuous variable transmission (CVT600) being individuallyinstalled between the right end output shaft (1012) thereof and thewheel set (W200) at the rear right side, the wheel set (W400) at thefront right side and the wheel set (W600) at the middle right side,according to one embodiment of the present invention.

FIG. 4 is a schematic view illustrating FIG. 2 being further installedwith a first epicyclic gear seat (EG101) and a second epicyclic gear set(EG102) driven by the rotary kinetic power of the rotary kinetic powersource (P100), and a continuous variable transmission (CVT100) beinginstalled between the left end output shaft (1011) of the firstepicyclic gear set (EG101) and the wheel set (W100) at the rear leftside of the loading end, a continuous variable transmission (CVT200)being installed between the right end output shaft (1012) and the wheel(W200) at the rear right side, and a continuous variable transmission(CVT300) being installed between the left end output shaft (1021) of thesecond epicyclic gear set (EG102) and the wheel set (W300) at the frontleft side, and a continuous variable transmission (CVT400) beinginstalled between the right end output shaft (1022) and the wheel set(W400) at the front right side, according to one embodiment of thepresent invention.

FIG. 5 is a schematic view illustrating FIG. 3 being further installedwith a first epicyclic gear seat (EG101), a second epicyclic gear set(EG102) and a third epicyclic gear set (EG103) driven by the rotarykinetic power of the rotary kinetic power source (P100), and acontinuous variable transmission (CVT100) being installed between theleft end output shaft (1011) of the first epicyclic gear set (EG101) andthe wheel set (W100) at the rear left side of the loading end, acontinuous variable transmission (CVT200) being installed between theright end output shaft (1012) and the wheel set (W200) at the rear rightside, a continuous variable transmission (CVT300) being installedbetween the left end output shaft (1021) of the second epicyclic gearset (EG102) and the wheel set (W300) at the front left side, acontinuous variable transmission (CVT400) being installed between theright end output shaft (1022) and the wheel set (W400) at the frontright side, a continuous variable transmission (CVT500) being installedbetween the left end output shaft (1031) of the third epicyclic gear set(EG103) and the wheel set (W500) at the middle left side, and acontinuous variable transmission (CVT600) being installed between theright end output shaft (1032) and the wheel set (W600) at the middleright side, according to one embodiment of the present invention.

FIG. 6 is a schematic view illustrating FIG. 1 being installed with adirection changing signal sensor (S100) to send a signal to the controlunit (ECU100) for controlling the relative speed ratio switching of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), according to one embodiment of the presentinvention.

FIG. 7 is a block diagram illustrating the structure in which thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), the output end clutch devices (CL100), (CL200),and transmission devices (T100), (T200) being combined at two outputsides of the first epicyclic gear set (EG101), according to oneembodiment of the present invention.

FIG. 8 is a schematic view illustrating FIG. 7 being installed with adirection changing signal sensor (S100) to send a signal to the controlunit (ECU100) for controlling the relative speed ratio switching of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), according to one preferred embodiment of thepresent invention.

DESCRIPTION OF MAIN COMPONENT SYMBOLS

-   B100: electric power source-   CL101: input end clutch device-   CL 100    CL200    CL300    CL400    CL500    CL600: output end clutch device-   CVT100    CVT200    CVT300    CVT400    CVT500    CVT600: continuous variable transmission-   EG101: first epicyclic gear set-   EG102: second epicyclic gear set-   EG103: third epicyclic gear set-   ECU100: control unit-   1011    1021    1031: left end output shaft-   1012    1022    1032: right end output shaft-   L100: common load body-   MI100: external operation interface-   P100: rotation kinetic power source-   S100: direction changing signal sensor-   SDT100    SDT200    SDT300: stabilize device-   T100    T101    T200    T300    T400    T500    T600: transmission device-   W100    W200    W300    W400    W500    W600: wheel set

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

When a conventional single power performs differential driving to two ormore than two of individual loads of a common load body, a differentialwheel set is often used for achieving the function of differentialspeed, the mentioned means has a shortage of not being able to generatethe torque differential between the two loads.

The present invention provides a multi-CVT drive system having epicyclicgear set, which utilizes the rotary kinetic power of a rotary kineticpower source to directly drive the epicyclic gear set, or to drive theepicyclic gear set through a transmission device, then a continuousvariable transmission (CVT) is individually installed between two outputshafts of the epicyclic gear set and the load driven thereby, so thewheel set of the driven load is enabled to randomly perform variation ofthe driving speed ratio and the driving torque, so as to drive thecombined common load; the mentioned common load body (L100) is mainlydefined as the frame body of a vehicle, and is installed with a rotarykinetic power source, relative operation and transmission interfacedevices, and installed with loading wheel sets driven by the rotarykinetic power source and installed with non-powered wheels not beingdriven by the rotary kinetic power source (P100) according to actualneeds, thereby jointly carrying the common load body (L100).

The continuous variable transmission of the multi-CVT drive systemhaving epicyclic gear set is individually installed and driven at thewheel sets at two sides of a common load body, and the continuousvariable transmission (CVT) is e.g. structured by continuous variabletransmissions having several structural configurations such as a rubberbelt type, metal belt type, chain type continuous variable transmission,or an electric continuous variable transmission (ECVT), or a frictiondisk type, or a conventional different-shaft type continuous variabletransmission, which includes a continuous variable transmission capableof individually and automatically varying speed ratio along with theloading torque, or a continuous variable transmission capable ofindividually and passively varying speed ratio automatically along withthe driving rotation speed at the input end and/or the loading torque,or a continuous variable transmission utilizing an external operationinterface (MI100) to actively control the speed ratio, so as to performall or a part of the following controls, including: (1) actively andsynchronously controlling the speed ratios of a continuous variabletransmission (CVT100) and a continuous variable transmission (CVT200);(2) actively and individually controlling the speed ratios of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200) to be different for actively controlling theproportion of different speed ratios between individual continuousvariable transmissions;

-   -   external operation interface (MI100): related to a linear analog        type, or digital type, or hybrid type external control device,        constituted by a operation mechanisms and/or electromechanical        devices, and/or solid state electric circuits which are        controlled by manual force, mechanical force or electric power,        and served to control the operation status of the rotary kinetic        power source (P100) and/or to control the operation of the        continuous variable transmission;

According to the multi-CVT drive system having epicyclic gear set, alimited slip differential or a stabilize device composed of a dual shaftconnecting device having slip coupling torque can be installed atopposite locations horizontally and coaxially defined at two sides alongthe driving direction of the common load body (L100) and between thesame transmission operation sets, and when the differential operation isperformed between two loads, the stabilize device is served to stabilizethe operation of the drive system; the stabilize device includes alimited slip differential, or a coupling torque dual shaft connectingdevice composed of a coupling device having slip damp, e.g. a dual shaftstructure configured by fluid viscous effect, hydrodynamic damp effect,mechanical friction effect, electromagnetic vortex effect or powergeneration reverse torque effect, and two rotating ends of the stabilizedevice are respectively connected to: one or more than one location ofthe opposite locations horizontally and coaxially defined on thefollowing transmission operation sets, including:

-   (1) installed between wheel set rotation parts oppositely at the    left side and the right side;-   (2) installed between opposite output ends of the continuous    variable transmissions at the left side and the right side;-   (3) installed between opposite output ends of clutch devices at the    left side and the right side;-   (4) installed between the input end or the output end oppositely at    the left side and the right side of the transmission device;-   (5) installed between the wheel set rotation part at the left side    and the wheel set rotation part at the right side;

By installing the mentioned stabilize device for the driving operation,when the load varying at individual loading end, or the control requiredby the operation state of the opposite continuous variabletransmissions, or the unstable state during operation, the stabilizedevice can be served to stabilize the system; the stabilize device canbe optionally installed according to actual needs.

According to the multi-CVT drive system having epicyclic gear set,between the input end of individual continuous variable transmission tothe wheel set of the loading end, a stepped or continuous variabletransmission having fixed speed ratio for acceleration or decelerationor changing direction can be further installed at one or more than oneof following locations, including:

-   (1) installed at the input end of the continuous variable    transmission;-   (2) installed at the output end of the continuous variable    transmission;-   (3) installed at the input end of the clutch device;-   (4) installed at the output end of the clutch device;-   (5) installed at the input end of the wheel set at the loading end;

The mentioned transmission device is consisted of mechanical gear sets,or chain sets or pulley sets or linkage rod sets, and composed of atransmission device having fixed speed ratio for acceleration ordeceleration or changing direction, or a manually-operated or automaticor semi-automatic speed ratio varying or belt type continuous variabletransmission, or a hydraulic torque converter; the transmission devicecan be optionally installed according to actual needs.

According to the multi-CVT drive system having epicyclic gear set,between the input end of individual continuous variable transmission andthe wheel set of the loading end, a clutch device can be furtherinstalled at one or more than one of following locations, including:

-   (1) installed at the input end of the continuous variable    transmission;-   (2) installed at the output end of the continuous variable    transmission;-   (3) installed at the input end of the transmission device;-   (4) installed at the output end of the transmission device;-   (5) installed at the input end of the wheel set at the loading end;

The mentioned clutch device is controlled by manual force or centrifugalforce, or controlled by the external operation interface, and can beserved as a clutch device or structure having function of performingtransmission engaging or releasing while being driven by electric forceand/or magnetic force and/or mechanical force and/or pressure and/orhydraulic force, and has a rotary input end and a rotary output end; theoutput end clutch device further includes a function of being driven byelectric force and/or magnetic force and/or mechanical force and/orpressure and/or hydraulic force for controlling the coupling torquebetween engaging and releasing, e.g. an electromagnetic wet typemulti-plate clutch device controlling coupling torque through excitingcurrent, or a wet type multi-plate clutch device driven by mechanicalforce and/or pressure and/or hydraulic force;

The structure of the output end clutch device includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The clutch device can be optionally installed according to actual needs.

According to the present invention, the multi-CVT drive system havingdifferential epicyclic gear set can be applied in a vehicle or anindustry-used, agriculture-used or specially-designed carrier with frontwheel drive, or rear wheel drive, or four wheel drive, or multiple wheeldrive or driven by belts installed at two sides.

Embodiments according to the present invention are illustrated asfollowings:

FIG. 1 is a schematic view illustrating the common load body (L100)being installed with a first epicyclic gear set (EG101) driven by therotary kinetic power of a rotary kinetic power source (P100), acontinuous variable transmission (CVT100) being installed between a leftend output shaft (1011) of the first epicyclic gear set (EG101) and aleft side wheel set (W100) of the loading end, and a continuous variabletransmission (CVT200) being installed between a right end output shaft(1012) and a right side wheel set (W200), according to one embodiment ofthe present invention.

As shown in FIG. 1, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100) is installed between the left end output shaft (1011) of thetwo output ends of the first epicyclic gear set (EG101) and the leftside wheel set (W100) of the loading end of the common load body (L100),and the continuous variable transmission (CVT200) is installed betweenthe right end output shaft (1012) of the two output ends of the firstepicyclic gear set (EG101) and the right side wheel set (W200), therebyforming the drive system capable of being operated in the differentialspeed and variable speed state, which mainly consists of:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101); the transmission device (T101) can be optionally        adopted according to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT100), the right end output shaft (1012) is        served to drive the input end of the continuous variable        transmission (CVT200);    -   continuous variable transmission (CVT100), (CVT200): the        continuous variable transmission (CVT) is e.g. structured by        continuous variable transmissions having several structural        configurations such as a rubber belt type, metal belt type,        chain type continuous variable transmission, or an electric        continuous variable transmission (ECVT), or a friction disk        type, or a conventional different-shaft type continuous variable        transmission, which includes a continuous variable transmission        capable of individually and automatically varying speed ratio        along with the loading torque, or a continuous variable        transmission capable of individually and passively varying speed        ratio automatically along with the driving rotation speed at the        input end and/or the loading torque, or a continuous variable        transmission utilizing an external operation interface (MI100)        to actively control the speed ratio, so as to perform all or a        part of the following controls, including: (1) actively and        synchronously controlling the speed ratios of a continuous        variable transmission (CVT100) and a continuous variable        transmission (CVT200); (2) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100) and the continuous variable transmission (CVT200) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmissions;    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100) and/or the        continuous variable transmission (CVT200), or for controlling        the control unit (ECU100) so as to further control the operation        state of the rotary kinetic power source (P100), and/or control        the operation speed ratios of the continuous variable        transmission (CVT 100) and/or the continuous variable        transmission (CVT200);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B 100) and controlled by the external        operation interface (MI100) or operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT100) and/or the continuous variable        transmission (CVT200);    -   stabilize device (SDT100): constituted by a limited slip        differential, or a dual shaft connecting device composed of a        coupling device having slip damp coupling torque, including a        stabilize device with the dual shaft structure configured        through fluid viscous effect, hydrodynamic damp effect,        mechanical friction effect, electromagnetic vortex effect or        power generation reverse torque effect; wherein two rotating        ends thereof are respectively connected between the left side        wheel set (W100) and the right side wheel set (W200) of the        loading end; during the driving operation, if the load varying        at the individual two sides of the loading end causes the        unstable operation, with the slip damp coupling torque of the        stabilize device (SDT100) installed between the wheel sets at        the left and right sides, the operation of the system can be        stabilized; the stabilize device (SDT100) can be optionally        installed according to actual needs;

According to the embodiment disclosed in FIG. 1, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200): the output end of the        transmission device (T100) is served to drive the left side        wheel set (W100) of the loading end, and the input end thereof        is driven by the rotary kinetic power from the output end of the        continuous variable transmission (CVT100); the output end of the        transmission device (T200) is served to drive the right side        wheel set (W200), and the input end thereof is driven by the        rotary kinetic power from the output end of the continuous        variable transmission (CVT200); the transmission device (T100)        and the transmission device (T200) are consisted of mechanical        gear sets, or chain sets, pulley sets or linkage rod sets, and        structured as a transmission device having fixed speed ratio for        acceleration or deceleration or changing direction or having        switchable multi-step speed ratios, or a manually-operated or        automatic or semi-automatic speed ratio or belt type continuous        variable transmission, or a hydraulic type torque converter; the        transmission devices (T100), (T200) can be optionally installed        according to actual needs;

According to the embodiment disclosed in FIG. 1, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200): the output end clutch        device (CL 100) is installed between the output end of the        continuous variable transmission (CVT100) and the wheel set        (W100) for controlling the continuous variable transmission        (CVT100) to output the rotary kinetic power to the wheel set        (W100), and the output end clutch device (CL200) is installed        between the output end of the continuous variable transmission        (CVT200) and the wheel set (W200) for controlling the continuous        variable transmission (CVT200) to output the rotary kinetic        power to the wheel set (W200); the output end clutch device        (CL100) and the output end clutch device (CL200) include being        controlled by manual force or centrifugal force, or controlled        through the external operation interface (MI100) and the control        unit (ECU100), and formed as a clutch device or structure driven        by electric force and/or magnetic force and/or mechanical force        and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the output end clutch device can        further includes being driven by electric force and/or magnetic        force and/or mechanical force and/or air pressure and/or        hydraulic force for controlling the coupling torque between        engaging and releasing, e.g. an electromagnetic wet type        multi-plate clutch controlling coupling torque through magnetic        exciting current, or a wet type multi-plate clutch driven by        mechanical force and/or air pressure and/or hydraulic force;

The structure of the output end clutch device (CL100), (CL200) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200) can be optionallyinstalled according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the left side wheel set (W100) and the right side wheel set (W200)of the loading end are operated in differential speeds, the speed ratiosof the continuous variable transmission (CVT100) and the continuousvariable transmission (CVT200) are individually adjusted along with theload varying of the wheel set (W100) and the wheel set (W200) of theloading end, and the two output ends of the first epicyclic gear set(EG101) perform differential operation for adjustment, so as to drive indifferential speed between the input end of the continuous variabletransmission (CVT100) and the input end of the continuous variabletransmission (CVT200).

FIG. 2 is schematic view illustrating a continuous variable transmission(CVT100) and a continuous variable transmission (CVT300) beingindividually installed between left end output shaft (1011) of the firstepicyclic gear set (EG101) of FIG. 1 and the wheel set (W100) at therear left side of the loading end and the wheel set (W300) at the frontleft side, and a continuous variable transmission (CVT200) and acontinuous variable transmission (CVT400) being individually installedbetween the right end output shaft (1012) and the wheel set (W200) atthe rear right side of the loading end and the wheel set (W400) at thefront right side, according to one embodiment of the present invention;

As shown in FIG. 2, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100) and the continuous variable transmission (CVT300) arerespectively installed between the left end output shaft (1011) of thetwo output ends of the first epicyclic gear set (EG101) and the wheelset (W100) at the rear left side and the wheel set (W300) at the frontleft side of the loading end at the left side of the common load body(L100), and the continuous variable transmission (CVT200) and thecontinuous variable transmission (CVT400) are installed between theright end output shaft (1012) and the wheel set (W200) at the rear rightside and the wheel set (W400) at the front right side of the loading endat the right side of the common load body (L100), thereby forming thedrive system capable of being operated in the speed differential state,which mainly consists of:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101); the transmission device (T101) can be optionally        adopted according to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input ends of the continuous variable        transmission (CVT100) and the continuous variable transmission        (CVT300), and the right end output shaft (1012) thereof is        served to drive the input ends of the continuous variable        transmission (CVT200) and the continuous variable transmission        (CVT400);    -   continuous variable transmission (CVT100), (CVT200), (CVT300),        (CVT400): the continuous variable transmission (CVT) is e.g.        structured by continuous variable transmissions having several        structural configurations such as a rubber belt type, metal belt        type, chain type continuous variable transmission, or an        electric continuous variable transmission (ECVT), or a friction        disk type, or a conventional different-shaft type continuous        variable transmission, which includes a continuous variable        transmission capable of individually and automatically varying        speed ratio along with the loading torque, or a continuous        variable transmission capable of individually and passively        varying speed ratio automatically along with the driving        rotation speed at the input end and/or the loading torque, or a        continuous variable transmission utilizing the external        operation interface (MI100) to actively control the speed ratio,        so as to perform all or a part of the following controls,        including: (1) actively and synchronously controlling the speed        ratios of the continuous variable transmission (CVT100) and the        continuous variable transmission (CVT200); (2) actively and        individually controlling the speed ratios of the continuous        variable transmission (CVT100) and the continuous variable        transmission (CVT200) to be different for actively controlling        the proportion of different speed ratios between individual        continuous variable transmissions; (3) actively and        synchronously controlling the speed ratios of the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400); (4) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT300) and the continuous variable transmission (CVT400) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmission; (5) actively and synchronously controlling the        speed ratios of the continuous variable transmission (CVT100),        the continuous variable transmission (CVT200), the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400); (6) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100), the continuous variable transmission (CVT200), the        continuous variable transmission (CVT300) and the continuous        variable transmission (CVT400) to be different for actively        controlling the proportion of different speed ratios between        individual continuous variable transmission.    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100), and/or the        continuous variable transmission (CVT200), and/or the continuous        variable transmission (CVT300), and/or the continuous variable        transmission (CVT400), or for controlling the control unit        (ECU100) so as to further control the operation state of the        rotary kinetic power source (P100), and/or control the operation        speed ratios of the continuous variable transmission (CVT 100),        and/or the continuous variable transmission (CVT200), and/or the        continuous variable transmission (CVT300), and/or the continuous        variable transmission (CVT400);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B 100) and controlled by the external        operation interface (MI100) or operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT100) and/or the continuous variable        transmission (CVT200), and/or the continuous variable        transmission (CVT300) and/or the continuous variable        transmission (CVT400);    -   stabilize device (SDT100), (STD200): constituted by a limited        slip differential, or a dual shaft connecting device composed of        a coupling device having slip damp coupling torque, including a        stabilize device with the dual shaft structure configured        through fluid viscous effect, hydrodynamic damp effect,        mechanical friction effect, electromagnetic vortex effect or        power generation reverse torque effect; wherein two rotating        ends of the stabilize device (SDT100) are respectively connected        between the wheel set (W100) at the rear left side and the wheel        set (W200) at the rear right side of the loading end, and two        rotating ends of the stabilize device (SDT200) are respectively        connected between the wheel set (W300) at the front left side        and the wheel set (W400) at the front right side of the loading        end; during the driving operation, if the load varying at the        individual two sides of the loading end causes the unstable        operation, with the slip damp coupling torque of the stabilize        device (SDT100) and/or the stabilize device (SDT200) installed        between the two opposite wheel sets at the left and right sides,        the operation of the system can be stabilized; the stabilize        device (SDT100) and/or the stabilize device (SDT200) can be        optionally installed according to actual needs;

According to the embodiment disclosed in FIG. 2, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200), (T300), (T400): the output        end of the transmission device (T100) is served to drive the        wheel set (W100) at the rear left side of the loading end, and        the input end thereof is driven by the rotary kinetic power from        the output end of the continuous variable transmission (CVT100);        the output end of the transmission device (T200) is served to        drive the wheel set (W200) at the rear right side, and the input        end thereof is driven by the rotary kinetic power from the        output end of the continuous variable transmission (CVT200); the        output end of the transmission device (T300) is served to drive        the wheel set (W300) at the front left side of the loading end,        and the input end thereof is driven by the rotary kinetic power        from the output end of the continuous variable transmission        (CVT300); the output end of the transmission device (T400) is        served to drive the wheel set (W400) at the front right side,        and the input end thereof is driven by the rotary kinetic power        from the output end of the continuous variable transmission        (CVT400); the transmission devices (T100), (T200), (T300),        (T400) are consisted of mechanical gear sets, or chain sets,        pulley sets or linkage rod sets, and structured as a        transmission device having fixed speed ratio for acceleration or        deceleration or changing direction, or having switchable        multi-step speed ratios, or a manually-operated or automatic or        semi-automatic speed ratio or belt type continuous variable        transmission, or a hydraulic type torque converter; the        transmission devices (T100), (T200) and/or (T300), (T400) can be        optionally installed according to actual needs;

According to the embodiment disclosed in FIG. 2, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200), (CL300), (CL400): the        output end clutch device (CL100) is installed between the output        end of the continuous variable transmission (CVT100) and the        wheel set (W100) for controlling the continuous variable        transmission (CVT100) to output the rotary kinetic power to the        wheel set (W100), the output end clutch device (CL200) is        installed between the output end of the continuous variable        transmission (CVT200) and the wheel set (W200) for controlling        the continuous variable transmission (CVT200) to output the        rotary kinetic power to the wheel set (W200), the output end        clutch device (CL300) is installed between the output end of the        continuous variable transmission (CVT300) and the wheel set        (W300) for controlling the continuous variable transmission        (CVT300) to output the rotary kinetic energy to the wheel set        (W300), and the output end clutch device (CL400) is installed        between the output end of the continuous variable transmission        (CVT400) and the wheel set (W400) for controlling the continuous        variable transmission (CVT400) to output rotation kinetic energy        to the wheel set (W400); the output end clutch devices (CL100),        (CL200), (CL300), (CL400) include being controlled by manual        force or centrifugal force, or controlled through the external        operation interface (MI100) and the control unit (ECU100), and        formed as a clutch device or structure driven by electric force        and/or magnetic force and/or mechanical force and/or air        pressure and/or hydraulic force for performing transmission        engaging or releasing, and having a rotary input end and a        rotary output end; the output end clutch device can further        includes being driven by electric force and/or magnetic force        and/or mechanical force and/or air pressure and/or hydraulic        force for controlling the coupling torque between engaging and        releasing, e.g. an electromagnetic wet type multi-plate clutch        controlling coupling torque through magnetic exciting current,        or a wet type multi-plate clutch driven by mechanical force        and/or air pressure and/or hydraulic force;

The structure of the output end clutch device (CL 100), (CL200),(CL300), (CL400) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200), (CL300), (CL400) can beoptionally installed according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the wheel set (W100) at the rear left side and the wheel set (W200)at the rear right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT100) and the continuous variable transmission (CVT200) areindividually adjusted along with the load varying of the wheel set(W100) and the wheel set (W200) of the loading end, and the two outputends of the first epicyclic gear set (EG101) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT100) and theinput end of the continuous variable transmission (CVT200); when thewheel set (W300) at the front left side and the wheel set (W400) at thefront right side of the loading end are operated in differential speeds,the speed ratios of the continuous variable transmission (CVT300) andthe continuous variable transmission (CVT400) are individually adjustedalong with the load varying of the wheel set (W300) and the wheel set(W400) of the loading end, and the left end output shaft (1011) and theright end output shaft (1012) of the two output ends of the firstepicyclic gear set (EG101) perform differential operation for adjustmentso as to drive in differential speed between the input end of thecontinuous variable transmission (CVT300) and the input end of thecontinuous variable transmission (CVT400); if the operation indifferential speed are performed between the wheel set (W100) and thewheel set (W200) and between the wheel set (W300) and the wheel set(W400) at the same time, the interactive differential operation isjointly formed between the continuous variable transmission (CVT100) andthe continuous variable transmission (CVT200) and between the continuousvariable transmission (CVT300) and the continuous variable transmission(CVT400), and between the left end output shaft (1011) and the right endoutput shaft (1012) of the two output ends of the first epicyclic gearset (EG101).

FIG. 3 is schematic view illustrating a continuous variable transmission(CVT100) and a continuous variable transmission (CVT300) and acontinuous variable transmission (CVT500) being individually installedbetween the left end output shaft (1011) of the first epicyclic gear set(EG101) of FIG. 1 and the wheel set (W100) at the rear left side, thewheel set (W300) at the front left side and the wheel set (W500) at themiddle left side of the loading end, and a continuous variabletransmission (CVT200) and a continuous variable transmission (CVT400)and a continuous variable transmission (CVT600) being individuallyinstalled between the right end output shaft (1012) thereof and thewheel set (W200) at the rear right side, the wheel set (W400) at thefront right side and the wheel set (W600) at the middle right side,according to one embodiment of the present invention.

As shown in FIG. 3, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100), the continuous variable transmission (CVT300) and thecontinuous variable transmission (CVT500) are respectively installedbetween the left end output shaft (1011) of the two output ends of thefirst epicyclic gear set (EG101) and the wheel set (W100) at the rearleft side, the wheel set (W300) at the front left side and the wheel set(W500) at the middle left side of the loading end at the left side ofthe common load body (L100), and the continuous variable transmission(CVT200) and the continuous variable transmission (CVT400) and thecontinuous variable transmission (CVT600) are installed between theright end output shaft (1012) and the wheel set (W200) at the rear rightside, the wheel set (W400) at the front right side and the wheel set(W600) at the middle right side of the loading end at the right side ofthe common load body (L100), thereby forming the drive system capable ofbeing operated in the speed differential state, which mainly consistsof:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101); the transmission device (T101) can be optionally        adopted according to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input ends of the continuous variable        transmissions (CVT100), (CVT300), (CVT500), and the right end        output shaft (1012) thereof is served to drive the input ends of        the continuous variable transmissions (CVT200), (CVT400),        (CVT600);    -   continuous variable transmission (CVT100), (CVT200), (CVT300),        (CVT400), (CVT500), (CVT600): the continuous variable        transmission (CVT) is e.g. structured by continuous variable        transmissions having several structural configurations such as a        rubber belt type, metal belt type, chain type continuous        variable transmission, or an electric continuous variable        transmission (ECVT), or a friction disk type, or a conventional        different-shaft type continuous variable transmission, which        includes a continuous variable transmission capable of        individually and automatically varying speed ratio along with        the loading torque, or a continuous variable transmission        capable of individually and passively varying speed ratio        automatically along with the driving rotation speed at the input        end and/or the loading torque, or a continuous variable        transmission utilizing the external operation interface (MI100)        to actively control the speed ratio, so as to perform all or a        part of the following controls, including: (1) actively and        synchronously controlling the speed ratios of the continuous        variable transmission (CVT100) and the continuous variable        transmission (CVT200); (2) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100) and the continuous variable transmission (CVT200) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmissions; (3) actively and synchronously controlling the        speed ratios of the continuous variable transmission (CVT300)        and the continuous variable transmission (CVT400); (4) actively        and individually controlling the speed ratios of the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400) to be different for actively controlling        the proportion of different speed ratios between individual        continuous variable transmission; (5) actively and synchronously        controlling the speed ratios of the continuous variable        transmission (CVT500) and the continuous variable transmission        (CVT600); (6) actively and individually controlling the speed        ratios of the continuous variable transmission (CVT500) and the        continuous variable transmission (CVT600) to be different for        actively controlling the proportion of different speed ratios        between individual continuous variable transmission; (7)        actively and synchronously controlling the speed ratios of the        continuous variable transmission (CVT100), the continuous        variable transmission (CVT200), the continuous variable        transmission (CVT300), the continuous variable transmission        (CVT400), the continuous variable transmission (CVT500) and the        continuous variable transmission (CVT600); (8) actively and        individually controlling the speed ratios of the continuous        variable transmission (CVT100), the continuous variable        transmission (CVT200), the continuous variable transmission        (CVT300), the continuous variable transmission (CVT400), the        continuous variable transmission (CVT500) and the continuous        variable transmission (CVT600) to be different for actively        controlling the proportion of different speed ratios between        individual continuous variable transmissions;    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100), and/or the        continuous variable transmission (CVT200), and/or the continuous        variable transmission (CVT300), and/or the continuous variable        transmission (CVT400), and/or the continuous variable        transmission (CVT500), and/or the continuous variable        transmission (CVT600), or for controlling the control unit        (ECU100) so as to further control the operation state of the        rotary kinetic power source (P100), and/or control the operation        speed ratios of the continuous variable transmission (CVT100),        and/or the continuous variable transmission (CVT200), and/or the        continuous variable transmission (CVT300), and/or the continuous        variable transmission (CVT400), and/or the continuous variable        transmission (CVT500), and/or the continuous variable        transmission (CVT600);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B 100) and controlled by the external        operation interface (MI100) or operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT100) and/or the continuous variable        transmission (CVT200), and/or the continuous variable        transmission (CVT300), and/or the continuous variable        transmission (CVT400), and/or the continuous variable        transmission (CVT500) and/or the continuous variable        transmission (CVT600);    -   stabilize device (SDT100), (STD200), (STD300): constituted by a        limited slip differential, or a dual shaft connecting device        composed of a coupling device having slip damp coupling torque,        including a stabilize device with the dual shaft structure        configured through fluid viscous effect, hydrodynamic damp        effect, mechanical friction effect, electromagnetic vortex        effect or power generation reverse torque effect; wherein two        rotating ends of the stabilize device (SDT100) are respectively        connected between the wheel set (W100) at the rear left side and        the wheel set (W200) at the rear right side of the loading end,        two rotating ends of the stabilize device (SDT200) are        respectively connected between the wheel set (W300) at the front        left side and the wheel set (W400) at the front right side of        the loading end, and two rotating ends of the stabilize device        (SDT300) are respectively connected between the wheel set (W500)        at the middle left side and the wheel set (W600) at the middle        right side of the loading end; during the driving operation, if        the load varying at the individual two sides of the loading end        causes the unstable operation, with the slip damp coupling        torque of the stabilize device (SDT100) and/or the stabilize        device (SDT200) and/or the stabilize device (SDT300) installed        between the two opposite wheel sets at the left and right sides,        the operation of the system can be stabilized; the stabilize        device (SDT100) and/or the stabilize device (SDT200) and/or the        stabilize device (SDT300) can be optionally installed according        to actual needs;

According to the embodiment disclosed in FIG. 3, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200), (T300), (T400), (T500),        (T600): the output end of the transmission device (T100) is        served to drive the wheel set (W100) at the rear left side of        the loading end, and the input end thereof is driven by the        rotary kinetic power from the output end of the continuous        variable transmission (CVT100); the output end of the        transmission device (T200) is served to drive the wheel set        (W200) at the rear right side, and the input end thereof is        driven by the rotary kinetic power from the output end of the        continuous variable transmission (CVT200); the output end of        (T300) is served to drive the wheel set (W300) at the front left        side of the loading end, and the input end thereof is driven by        the rotary kinetic power from the output end of the continuous        variable transmission (CVT300); the output end of the        transmission device (T400) is served to drive the wheel set        (W400) at the front right side, and the input end thereof is        driven by the rotary kinetic power from the output end of the        continuous variable transmission (CVT400); the output end of the        transmission device (T500) is served to drive the wheel set        (W500) at the middle left side of the loading end, and the input        end thereof is driven by the rotary kinetic power from the        output end of the continuous variable transmission (CVT500); the        output end of the transmission device (T600) is served to drive        the wheel set (W600) at the middle right side of the loading        end, and the input end thereof is driven by the rotary kinetic        power from the output end of the continuous variable        transmission (CVT600); the transmission devices (T100), (T200),        (T300), (T400), (T500), (T600) are consisted of mechanical gear        sets, or chain sets, pulley sets or linkage rod sets, and        structured as a transmission device having fixed speed ratio for        acceleration or deceleration or changing direction or having        switchable multi-step speed ratios, or a manually-operated or        automatic or semi-automatic speed ratio or belt type continuous        variable transmission, or a hydraulic type torque converter; the        transmission devices (T100), (T200) and/or (T300), (T400),        (T500), (T600) can be optionally installed according to actual        needs;

According to the embodiment disclosed in FIG. 3, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200), (CL300), (CL400),        (CL500), (CL600): the output end clutch device (CL100) is        installed between the output end of the continuous variable        transmission (CVT100) and the wheel set (W100) for controlling        the continuous variable transmission (CVT100) to output the        rotary kinetic power to the wheel set (W100), the output end        clutch device (CL200) is installed between the output end of the        continuous variable transmission (CVT200) and the wheel set        (W200) for controlling the continuous variable transmission        (CVT200) to output the rotary kinetic power to the wheel set        (W200), the output end clutch device (CL300) is installed        between the output end of the continuous variable transmission        (CVT300) and the wheel set (W300) for controlling the continuous        variable transmission (CVT300) to output the rotary kinetic        energy to the wheel set (W300), the output end clutch device        (CL400) is installed between the output end of the continuous        variable transmission (CVT400) and the wheel set (W400) for        controlling the continuous variable transmission (CVT400) to        output the rotary kinetic energy to the wheel set (W400), the        output end clutch device (CL500) is installed between the output        end of the continuous variable transmission (CVT500) and the        wheel set (W500) for controlling the continuous variable        transmission (CVT500) to output the rotary kinetic power to the        wheel set (W500), and the output end clutch device (CL600) is        installed between the output end of the continuous variable        transmission (CVT600) and the wheel set (W600) for controlling        the continuous variable transmission (CVT600) to output the        rotary kinetic power to the wheel set (W600); the output end        clutch devices (CL100), (CL200), (CL300), (CL400), (CL500),        (CL600) include being controlled by manual force or centrifugal        force, or controlled through the external operation interface        (MI100) and the control unit (ECU100), and formed as a clutch        device or structure driven by electric force and/or magnetic        force and/or mechanical force and/or air pressure and/or        hydraulic force for performing transmission engaging or        releasing, and having a rotary input end and a rotary output        end; the output end clutch device can further includes being        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for controlling        the coupling torque between engaging and releasing, e.g. an        electromagnetic wet type multi-plate clutch controlling coupling        torque through magnetic exciting current, or a wet type        multi-plate clutch driven by mechanical force and/or air        pressure and/or hydraulic force;

The structure of the output end clutch device (CL 100), (CL200),(CL300), (CL400), (CL500), (CL600) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200), (CL300), (CL400),(CL500), (CL600) can be optionally installed according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the wheel set (W100) at the rear left side and the wheel set (W200)at the rear right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT100) and the continuous variable transmission (CVT200) areindividually adjusted along with the load varying of the wheel set(W100) and the wheel set (W200) of the loading end, and the two outputends of the first epicyclic gear set (EG101) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT100) and theinput end of the continuous variable transmission (CVT200); when thewheel set (W300) at the front left side and the wheel set (W400) at thefront right side of the loading end are operated in differential speeds,the speed ratios of the continuous variable transmission (CVT300) andthe continuous variable transmission (CVT400) are individually adjustedalong with the load varying of the wheel set (W300) and the wheel set(W400) of the loading end, and the left end output shaft (1011) and theright end output shaft (1012) of the two output ends of the firstepicyclic gear set (EG101) perform differential operation for adjustmentso as to drive in differential speed between the input end of thecontinuous variable transmission (CVT300) and the input end of thecontinuous variable transmission (CVT400); accordingly, when the wheelset (W500) at the middle left side and the wheel set (W600) at themiddle right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT500) and the continuous variable transmission (CVT600) areindividually adjusted along with the load varying of the wheel set(W500) and the wheel set (W600) of the loading end, and the left endoutput shaft (1011) and the right end output shaft (1012) of the twooutput ends of the first epicyclic gear set (EG101) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT500) and theinput end of the continuous variable transmission (CVT600); if theoperation in differential speed are performed between the wheel set(W100) and the wheel set (W200) and/or between the wheel set (W300) andthe wheel set (W400) and/or between the wheel set (W500) and the wheelset (W600) at the same time, the interactive differential operation isjointly formed between the continuous variable transmission (CVT100) andthe continuous variable transmission (CVT200) and/or between thecontinuous variable transmission (CVT300) and the continuous variabletransmission (CVT400) and/or between the continuous variabletransmission (CVT500) and the continuous variable transmission (CVT600),and between the left end output shaft (1011) and the right end outputshaft (1012) of the two output ends of the first epicyclic gear set(EG101).

According to the multi-CVT drive system having epicyclic gear setillustrated in previous embodiment accompanied with FIG. 1, FIG. 2 andFIG. 3, when more wheel sets sharing the same epicyclic gear set andhaving individual continuous variable transmission at the loading end,the structured system can be formed with the same means disclosed above,wherein the limited slip differential or the stabilize device composedof the dual shaft connecting device having slip coupling torqueinstalled at opposite locations horizontally and coaxially defined attwo sides along the driving direction of the common load body (L100) andbetween the same transmission operation sets, or the transmission deviceor clutch device installed between the individual CVT to the wheel setcan be all or partially installed or none of the above is installed.

FIG. 4 is a schematic view illustrating FIG. 2 being further installedwith a first epicyclic gear seat (EG101) and a second epicyclic gear set(EG102) driven by the rotary kinetic power of the rotary kinetic powersource (P100), and a continuous variable transmission (CVT100) beinginstalled between the left end output shaft (1011) of the firstepicyclic gear set (EG101) and the wheel set (W100) at the rear leftside of the loading end, a continuous variable transmission (CVT200)being installed between the right end output shaft (1012) and the wheel(W200) at the rear right side, and a continuous variable transmission(CVT300) being installed between the left end output shaft (1021) of thesecond epicyclic gear set (EG102) and the wheel set (W300) at the frontleft side, and a continuous variable transmission (CVT400) beinginstalled between the right end output shaft (1022) and the wheel set(W400) at the front right side, according to one embodiment of thepresent invention.

As shown in FIG. 4, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100) is individually installed between the left end output shaft(1011) of the two output ends of the first epicyclic gear set (EG101)and the wheel set (W100) at the rear left side of the loading end at theleft side of the common load body (L100), and the continuous variabletransmission (CVT200) is individually installed between the right endoutput shaft (1012) and the wheel set (W200) at the rear right side ofthe loading end at the right side of the common load body (L100); therotary output end of the rotary kinetic power source (P100) is directlyor through the transmission device (T101) to drive the second epicyclicgear set (EG102), and the continuous variable transmission (CVT300) isindividually installed between the left end output shaft (1021) of thetwo output ends of the second epicyclic gear set (EG102) and the wheelset (W300) at the front left side of the loading end at the left side ofthe common load body (L100), and the continuous variable transmission(CVT400) is individually installed between the right end output shaft(1022) and the wheel set (W400) at the front right side of the loadingend at the right side of the common load body (L100), thereby formingthe drive system capable of being operated in the differential speedstate, which mainly consists of:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101) and the second epicyclic gear set (EG102); the        transmission device (T101) can be optionally adopted according        to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT100), and the right end output shaft (1012)        thereof is served to drive the input end of the continuous        variable transmission (CVT200);    -   second epicyclic gear set (EG102): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by the engine, or driven by the engine through        the transmission device (T101); the left end output shaft (1021)        of the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT300), and the right end output shaft (1022) is        served to drive the input end of the continuous variable        transmission (CVT400);    -   continuous variable transmission (CVT100), (CVT200), (CVT300),        (CVT400): the continuous variable transmission (CVT) is e.g.        structured by continuous variable transmissions having several        structural configurations such as a rubber belt type, metal belt        type, chain type continuous variable transmission, or an        electric continuous variable transmission (ECVT), or a friction        disk type, or a conventional different-shaft type continuous        variable transmission, which includes a continuous variable        transmission capable of individually and automatically varying        speed ratio along with the loading torque, or a continuous        variable transmission capable of individually and passively        varying speed ratio automatically along with the driving        rotation speed at the input end and/or the loading torque, or a        continuous variable transmission utilizing the external        operation interface (MI100) to actively control the speed ratio,        so as to perform all or a part of the following controls,        including: (1) actively and synchronously controlling the speed        ratios of the continuous variable transmission (CVT100) and the        continuous variable transmission (CVT200); (2) actively and        individually controlling the speed ratios of the continuous        variable transmission (CVT100) and the continuous variable        transmission (CVT200) to be different for actively controlling        the proportion of different speed ratios between individual        continuous variable transmissions; (3) actively and        synchronously controlling the speed ratios of the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400); (4) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT300) and the continuous variable transmission (CVT400) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmission; (5) actively and synchronously controlling the        speed ratios of the continuous variable transmission (CVT100),        the continuous variable transmission (CVT200), the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400); (6) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100), the continuous variable transmission (CVT200), the        continuous variable transmission (CVT300) and the continuous        variable transmission (CVT400) to be different for actively        controlling the proportion of different speed ratios between        individual continuous variable transmission;    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100), and/or the        continuous variable transmission (CVT200), and/or the continuous        variable transmission (CVT300), and/or the continuous variable        transmission (CVT400), or for controlling the control unit        (ECU100) so as to further control the operation state of the        rotary kinetic power source (P100), and/or control the operation        speed ratios of the continuous variable transmission (CVT 100),        and/or the continuous variable transmission (CVT200), and/or the        continuous variable transmission (CVT300), and/or the continuous        variable transmission (CVT400);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B100) and controlled by the external        operation interface (MI100) or operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT 100) and/or the continuous variable        transmission (CVT200), and/or the continuous variable        transmission (CVT300), and/or the continuous variable        transmission (CVT400);    -   stabilize device (SDT100), (STD200): constituted by a limited        slip differential, or a dual shaft connecting device composed of        a coupling device having slip damp coupling torque, including a        stabilize device with the dual shaft structure configured        through fluid viscous effect, hydrodynamic damp effect,        mechanical friction effect, electromagnetic vortex effect or        power generation reverse torque effect; wherein two rotating        ends of the stabilize device (SDT100) are respectively connected        between the wheel set (W100) at the rear left side and the wheel        set (W200) at the rear right side of the loading end, and two        rotating ends of the stabilize device (SDT200) are respectively        connected between the wheel set (W300) at the front left side        and the wheel set (W400) at the front right side of the loading        end; during the driving operation, if the load varying at the        individual two sides of the loading end causes the unstable        operation, with the slip damp coupling torque of the stabilize        device (SDT100) and/or the stabilize device (SDT200) installed        between the two opposite wheel sets at the left and right sides,        the operation of the system can be stabilized; the stabilize        device (SDT100) and/or the stabilize device (SDT200) can be        optionally installed according to actual needs;

According to the embodiment disclosed in FIG. 4, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200), (T300), (T400): the output        end of the transmission device (T100) is served to drive the        wheel set (W100) at the rear left side of the loading end, and        the input end thereof is driven by the rotary kinetic power from        the output end of the continuous variable transmission (CVT100);        the output end of the transmission device (T200) is served to        drive the wheel set (W200) at the rear right side, and the input        end thereof is driven by the rotary kinetic power from the        output end of the continuous variable transmission (CVT200); the        output end of the transmission device (T300) is served to drive        the wheel set (W300) at the front left side of the loading end,        and the input end thereof is driven by the rotary kinetic power        from the output end of the continuous variable transmission        (CVT300); the output end of the transmission device (T400) is        served to drive the wheel set (W400) at the front right side,        and the input end thereof is driven by the rotary kinetic power        from the output end of the continuous variable transmission        (CVT400); the transmission devices (T100), (T200), (T300),        (T400) are consisted of mechanical gear sets, or chain sets,        pulley sets or linkage rod sets, and structured as a        transmission device having fixed speed ratio for acceleration or        deceleration or changing direction or having switchable        multi-step speed ratios, or a manually-operated or automatic or        semi-automatic speed ratio or belt type continuous variable        transmission, or a hydraulic type torque converter; the        transmission devices (T100), (T200) and/or (T300), (T400) can be        optionally installed according to actual needs;

According to the embodiment disclosed in FIG. 4, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200), (CL300), (CL400): the        output end clutch device (CL100) is installed between the output        end of the continuous variable transmission (CVT100) and the        wheel set (W100) for controlling the continuous variable        transmission (CVT100) to output the rotary kinetic power to the        wheel set (W100), the output end clutch device (CL200) is        installed between the output end of the continuous variable        transmission (CVT200) and the wheel set (W200) for controlling        the continuous variable transmission (CVT200) to output the        rotary kinetic power to the wheel set (W200), the output end        clutch device (CL300) is installed between the output end of the        continuous variable transmission (CVT300) and the wheel set        (W300) for controlling the continuous variable transmission        (CVT300) to output the rotary kinetic energy to the wheel set        (W300), and the output end clutch device (CL400) is installed        between the output end of the continuous variable transmission        (CVT400) and the wheel set (W400) for controlling the continuous        variable transmission (CVT400) to output the rotary kinetic        energy to the wheel set (W400); the output end clutch devices        (CL100), (CL200), (CL300), (CL400) include being controlled by        manual force or centrifugal force, or controlled through the        external operation interface (MI100) and the control unit        (ECU100), and formed as a clutch device or structure driven by        electric force and/or magnetic force and/or mechanical force        and/or pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the output end clutch device can        further includes being driven by electric force and/or magnetic        force and/or mechanical force and/or air pressure and/or        hydraulic force for controlling the coupling torque between        engaging and releasing, e.g. an electromagnetic wet type        multi-plate clutch controlling coupling torque through magnetic        exciting current, or a wet type multi-plate clutch driven by        mechanical force and/or air pressure and/or hydraulic force;

The structure of the output end clutch device (CL 100), (CL200),(CL300), (CL400) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200), (CL300), (CL400) can beoptionally installed according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the wheel set (W100) at the rear left side and the wheel set (W200)at the rear right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT100) and the continuous variable transmission (CVT200) areindividually adjusted along with the load varying of the wheel set(W100) and the wheel set (W200) of the loading end, and the two outputends of the first epicyclic gear set (EG101) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT100) and theinput end of the continuous variable transmission (CVT200); when thewheel set (W300) at the front left side and the wheel set (W400) at thefront right side of the loading end are operated in differential speeds,the speed ratios of the continuous variable transmission (CVT300) andthe continuous variable transmission (CVT400) are individually adjustedalong with the load varying of the wheel set (W300) and the wheel set(W400) of the loading end, and the left end output shaft (1021) and theright end output shaft (1022) of the two output ends of the secondepicyclic gear set (EG102) perform differential operation for adjustmentso as to drive in differential speed between the input end of thecontinuous variable transmission (CVT300) and the input end of thecontinuous variable transmission (CVT400).

FIG. 5 is a schematic view illustrating FIG. 3 being further installedwith a first epicyclic gear seat (EG101), a second epicyclic gear set(EG102) and a third epicyclic gear set (EG103) driven by the rotarykinetic power of the rotary kinetic power source (P100), and acontinuous variable transmission (CVT100) being installed between theleft end output shaft (1011) of the first epicyclic gear set (EG101) andthe wheel set (W100) at the rear left side of the loading end, acontinuous variable transmission (CVT200) being installed between theright end output shaft (1012) and the wheel set (W200) at the rear rightside, a continuous variable transmission (CVT300) being installedbetween the left end output shaft (1021) of the second epicyclic gearset (EG102) and the wheel set (W300) at the front left side, acontinuous variable transmission (CVT400) being installed between theright end output shaft (1022) and the wheel set (W400) at the frontright side, a continuous variable transmission (CVT500) being installedbetween the left end output shaft (1031) of the third epicyclic gear set(EG103) and the wheel set (W500) at the middle left side, and acontinuous variable transmission (CVT600) being installed between theright end output shaft (1032) and the wheel set (W600) at the middleright side, according to one embodiment of the present invention.

As shown in FIG. 5, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100) is individually installed between the left end output shaft(1011) of the two output ends of the first epicyclic gear set (EG101)and the wheel set (W100) at the rear left side of the loading end at theleft side of the common load body (L100), and the continuous variabletransmission (CVT200) is individually installed between the right endoutput shaft (1012) and the wheel set (W200) at the rear right side ofthe loading end at the right side of the common load body (L100); andutilizes the rotary output end of the rotary kinetic power source (P100)to directly or through the transmission device (T101) to drive thesecond epicyclic gear set (EG102), and the continuous variabletransmission (CVT300) is individually installed between the left endoutput shaft (1021) of the two output ends of the second epicyclic gearset (EG102) and the wheel set (W300) at the front left side of theloading end at the left side of the common load body (L100), and thecontinuous variable transmission (CVT400) is individually installedbetween the right end output shaft (1022) and the wheel set (W400) atthe front right side of the loading end at the right side of the commonload body (L100); and utilizes the rotary output end of the rotarykinetic power source (P100) to directly or through the transmissiondevice (T101) to drive the third epicyclic gear set (EG103), and thecontinuous variable transmission (CVT500) is individually installedbetween the left end output shaft (1031) of the two output ends of thethird epicyclic gear set (EG103) and the wheel set (W500) at the middleleft side of the loading end at the left side of the common load body(L100), and the continuous variable transmission (CVT600) isindividually installed between the right end output shaft (1032) and thewheel set (W600) at the middle right side of the loading end at theright side of the common load body (L100), thereby forming the drivesystem capable of being operated in the differential speed state, whichmainly consists of:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101) and the second epicyclic gear set (EG102) and the        third epicyclic gear set (EG103); the transmission device (T101)        can be optionally adopted according to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmissions (CVT100), and the right end output shaft (1012)        thereof is served to drive the input end of the continuous        variable transmission (CVT200);    -   second epicyclic gear set (EG102): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by the engine, or driven by the engine through        the transmission device (T101); the left end output shaft (1021)        of the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT300), and the right end output shaft (1022)        thereof is served to drive the input end of the continuous        variable transmission (CVT400);    -   third epicyclic gear set (EG103): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by the engine, or driven by the engine through        the transmission device (T101); the left end output shaft (1031)        of the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT500), and the right end output shaft (1032)        thereof is served to drive the input end of the continuous        variable transmission (CVT600);    -   continuous variable transmission (CVT100), (CVT200), (CVT300),        (CVT400), (CVT500), (CVT600): the continuous variable        transmission (CVT) is e.g. structured by continuous variable        transmissions having several structural configurations such as a        rubber belt type, metal belt type, chain type continuous        variable transmission, or an electric continuous variable        transmission (ECVT), or a friction disk type, or a conventional        different-shaft type continuous variable transmission, which        includes a continuous variable transmission capable of        individually and automatically varying speed ratio along with        the loading torque, or a continuous variable transmission        capable of individually and passively varying speed ratio        automatically along with the driving rotation speed at the input        end and/or the loading torque, or a continuous variable        transmission utilizing the external operation interface (MI100)        to actively control the speed ratio, so as to perform all or a        part of the following controls, including: (1) actively and        synchronously controlling the speed ratios of the continuous        variable transmission (CVT100) and the continuous variable        transmission (CVT200); (2) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100) and the continuous variable transmission (CVT200) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmissions; (3) actively and synchronously controlling the        speed ratios of the continuous variable transmission (CVT300)        and the continuous variable transmission (CVT400); (4) actively        and individually controlling the speed ratios of the continuous        variable transmission (CVT300) and the continuous variable        transmission (CVT400) to be different for actively controlling        the proportion of different speed ratios between individual        continuous variable transmission; (5) actively and synchronously        controlling the speed ratios of the continuous variable        transmission (CVT500) and the continuous variable transmission        (CVT600); (6) actively and individually controlling the speed        ratios of the continuous variable transmission (CVT500) and the        continuous variable transmission (CVT600) to be different for        actively controlling the proportion of different speed ratios        between individual continuous variable transmission; (7)        actively and synchronously controlling the speed ratios of the        continuous variable transmission (CVT100), the continuous        variable transmission (CVT200), the continuous variable        transmission (CVT300), the continuous variable transmission        (CVT400), the continuous variable transmission (CVT500) and the        continuous variable transmission (CVT600); (8) actively and        individually controlling the speed ratios of the continuous        variable transmission (CVT100), the continuous variable        transmission (CVT200), the continuous variable transmission        (CVT300), the continuous variable transmission (CVT400), the        continuous variable transmission (CVT500) and the continuous        variable transmission (CVT600) to be different for actively        controlling the proportion of different speed ratios between        individual continuous variable transmissions;    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100), and/or the        continuous variable transmission (CVT200), and/or the continuous        variable transmission (CVT300), and/or the continuous variable        transmission (CVT400), and/or the continuous variable        transmission (CVT500), and/or the continuous variable        transmission (CVT600), or for controlling the control unit        (ECU100) so as to further control the operation state of the        rotary kinetic power source (P100), and/or control the operation        speed ratios of the continuous variable transmission (CVT100),        and/or the continuous variable transmission (CVT200), and/or the        continuous variable transmission (CVT300), and/or the continuous        variable transmission (CVT400), and/or the continuous variable        transmission (CVT500), and/or the continuous variable        transmission (CVT600);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B 100) and controlled by the external        operation interface (MI100) or operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT100) and/or the continuous variable        transmission (CVT200), and/or the continuous variable        transmission (CVT300), and/or the continuous variable        transmission (CVT400), and/or the continuous variable        transmission (CVT500) and/or the continuous variable        transmission (CVT600);    -   stabilize device (SDT100), (STD200), (STD300): constituted by a        limited slip differential, or a dual shaft connecting device        composed of a coupling device having slip damp coupling torque,        including a stabilize device with the dual shaft structure        configured through fluid viscous effect, hydrodynamic damp        effect, mechanical friction effect, electromagnetic vortex        effect or power generation reverse torque effect; wherein two        rotating ends of the stabilize device (SDT100) are respectively        connected between the wheel set (W100) at the rear left side and        the wheel set (W200) at the rear right side of the loading end,        two rotating ends of the stabilize device (SDT200) are        respectively connected between the wheel set (W300) at the front        left side and the wheel set (W400) at the front right side of        the loading end, and two rotating ends of the stabilize device        (SDT300) are respectively connected between the wheel set (W500)        at the middle left side and the wheel set (W600) at the middle        right side of the loading end; during the driving operation, if        the load varying at the individual two sides of the loading end        causes the unstable operation, with the slip damp coupling        torque of the stabilize device (SDT100) and/or the stabilize        device (SDT200) and/or the stabilize device (SDT300) installed        between the two opposite wheel sets at the left and right sides,        the operation of the system can be stabilized; the stabilize        device (SDT100) and/or the stabilize device (SDT200) and/or the        stabilize device (SDT300) can be optionally installed according        to actual needs;

According to the embodiment disclosed in FIG. 5, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200), (T300), (T400), (T500),        (T600): the output end of the transmission device (T100) is        served to drive the wheel set (W100) at the rear left side of        the loading end, and the input end thereof is driven by the        rotary kinetic power from the output end of the continuous        variable transmission (CVT100); the output end of the        transmission device (T200) is served to drive the wheel set        (W200) at the rear right side, and the input end thereof is        driven by the rotary kinetic power from the output end of the        continuous variable transmission (CVT200); the output end of the        transmission device (T300) is served to drive the wheel set        (W300) at the front left side of the loading end, and the input        end thereof is driven by the rotary kinetic power from the        output end of the continuous variable transmission (CVT300); the        output end of the transmission device (T400) is served to drive        the wheel set (W400) at the front right side, and the input end        thereof is driven by the rotary kinetic power from the output        end of the continuous variable transmission (CVT400); the output        end of the transmission device (T500) is served to drive the        wheel set (W500) at the middle left side of the loading end, and        the input end thereof is driven by the rotary kinetic power from        the output end of the continuous variable transmission (CVT500);        the output end of the transmission device (T600) is served to        drive the wheel set (W600) at the middle right side of the        loading end, and the input end is driven by the rotary kinetic        power from the output end of the continuous variable        transmission (CVT600); the transmission devices (T100), (T200),        (T300), (T400), (T500), (T600) are consisted of mechanical gear        sets, or chain sets, pulley sets or linkage rod sets, and        structured as a transmission device having fixed speed ratio for        acceleration or deceleration or changing direction, or a        manually-operated or automatic or semi-automatic speed ratio or        belt type continuous variable transmission, or a hydraulic type        torque converter; the transmission devices (T100), (T200) and/or        (T300), (T400), (T500), (T600) can be optionally installed        according to actual needs;

According to the embodiment disclosed in FIG. 5, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200), (CL300), (CL400),        (CL500), (CL600): the output end clutch device (CL100) is        installed between the output end of the continuous variable        transmission (CVT100) and the wheel set (W100) for controlling        the continuous variable transmission (CVT100) to output the        rotary kinetic power to the wheel set (W100), the output end        clutch device (CL200) is installed between the output end of the        continuous variable transmission (CVT200) and the wheel set        (W200) for controlling the continuous variable transmission        (CVT200) to output the rotary kinetic power to the wheel set        (W200), the output end clutch device (CL300) is installed        between the output end of the continuous variable transmission        (CVT300) and the wheel set (W300) for controlling the continuous        variable transmission (CVT300) to output the rotary kinetic        energy to the wheel set (W300), the output end clutch device        (CL400) is installed between the output end of the continuous        variable transmission (CVT400) and the wheel set (W400) for        controlling the continuous variable transmission (CVT400) to        output the rotary kinetic energy to the wheel set (W400), the        output end clutch device (CL500) is installed between the output        end of the continuous variable transmission (CVT500) and the        wheel set (W500) for controlling the continuous variable        transmission (CVT500) to output the rotary kinetic power to the        wheel set (W500), and the output end clutch device (CL600) is        installed between the output end of the continuous variable        transmission (CVT600) and the wheel set (W600) for controlling        the continuous variable transmission (CVT600) to output the        rotary kinetic power to the wheel set (W600); the output end        clutch devices (CL100), (CL200), (CL300), (CL400), (CL500),        (CL600) include being controlled by manual force or centrifugal        force, or controlled through the external operation interface        (MI100) and the control unit (ECU100), and formed as a clutch        device or structure driven by electric force and/or magnetic        force and/or mechanical force and/or pressure and/or hydraulic        force for performing transmission engaging or releasing, and        having a rotary input end and a rotary output end; the output        end clutch device can further includes being driven by electric        force and/or magnetic force and/or mechanical force and/or air        pressure and/or hydraulic force for controlling the coupling        torque between engaging and releasing, e.g. an electromagnetic        wet type multi-plate clutch controlling coupling torque through        magnetic exciting current, or a wet type multi-plate clutch        driven by mechanical force and/or air pressure and/or hydraulic        force;

The structure of the output end clutch device (CL 100), (CL200),(CL300), (CL400), (CL500), (CL600) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200), (CL300), (CL400),(CL500), (CL600) can be optionally installed according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the wheel set (W100) at the rear left side and the wheel set (W200)at the rear right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT100) and the continuous variable transmission (CVT200) areindividually adjusted along with the load varying of the wheel set(W100) and the wheel set (W200) of the loading end, and the two outputends of the first epicyclic gear set (EG101) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT100) and theinput end of the continuous variable transmission (CVT200); when thewheel set (W300) at the front left side and the wheel set (W400) at thefront right side of the loading end are operated in differential speeds,the speed ratios of the continuous variable transmission (CVT300) andthe continuous variable transmission (CVT400) are individually adjustedalong with the load varying of the wheel set (W300) and the wheel set(W400) of the loading end, and the left end output shaft (1021) and theright end output shaft (1022) of the two output ends of the secondepicyclic gear set (EG102) perform differential operation for adjustmentso as to drive in differential speed between the input end of thecontinuous variable transmission (CVT300) and the input end of thecontinuous variable transmission (CVT400); accordingly, when the wheelset (W500) at the middle left side and the wheel set (W600) at themiddle right side of the loading end are operated in differentialspeeds, the speed ratios of the continuous variable transmission(CVT500) and the continuous variable transmission (CVT600) areindividually adjusted along with the load varying of the wheel set(W500) and the wheel set (W600) of the loading end, and the left endoutput shaft (1031) and the right end output shaft (1032) of the twooutput ends of the third epicyclic gear set (EG103) perform differentialoperation for adjustment, so as to drive in differential speed betweenthe input end of the continuous variable transmission (CVT500) and theinput end of the continuous variable transmission (CVT600).

What shall be explained is that FIG. 4 and FIG. 5 are examples of themulti-CVT drive system having epicyclic gear set, when being applied ina loading end wheel set having more individual epicyclic gear sets andcontinuous variable transmissions, the structured system can be formedwith the same means disclosed above, wherein the limited slipdifferential or the stabilize device composed of the dual shaftconnecting device having slip coupling torque installed at oppositelocations horizontally and coaxially defined at two sides along thedriving direction of the common load body (L100) and between the sametransmission operation sets, or the transmission device, or the clutchdevice installed between the individual CVT to the wheel set can be allor partially installed or none of the above is installed.

According to the multi-CVT drive system having epicyclic gear set, adirection changing signal sensor (S 100) can be further installed, sowhen changing directions, the signal of the direction changing signalsensor (S100) can be sent to the control unit (ECU100) for controllingthe relative speed ratio switching of the continuous variabletransmission (CVT100) and the continuous variable transmission (CVT200),thereby enhancing the performance of the drive for changing direction;taken the embodiment disclosed in FIG. 1 installed with the directionchanging signal sensor (S100) as an example, and the embodimentsdisclosed in FIG. 2, FIG. 3, FIG. 4 and FIG. 5 can adopt the same;

FIG. 6 is a schematic view illustrating FIG. 1 being installed with adirection changing signal sensor (S100) to send a signal to the controlunit (ECU100) for controlling the relative speed ratio switching of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), according to one embodiment of the presentinvention.

As shown in FIG. 6, the present invention utilizes the rotary output endof the rotary kinetic power source (P100) of the common load body (L100)to directly or through the transmission device (T101) to drive the firstepicyclic gear set (EG101), and the continuous variable transmission(CVT100) is installed between the left end output shaft (1011) of thetwo output ends of the first epicyclic gear set (EG101) and the leftside wheel set (W100) of the loading end of the common load body (L100),and the continuous variable transmission (CVT200) is installed betweenthe right end output shaft (1012) of the two output ends of the firstepicyclic gear set (EG101) and the right side wheel set (W200), therebyforming the drive system capable of being operated in the differentialspeed and variable speed state, which mainly consists of:

-   -   rotary kinetic power source (P100): constituted by a power        source outputting kinetic power through rotation, e.g. an        internal combustion engine, external combustion engine, spring        power source, hydraulic power source, pressure power source,        flywheel power source or manual force, or animal force, wind        power source, and/or composed of a AC or DC, brush or brushless,        synchronous or non-synchronous, internal rotating or external        rotating type rotary motor installed with relative control        devices and electrically driven by power supply and/or storage        device; the output end thereof includes outputting directly or        outputting through a clutch device;    -   input end clutch device (CL101): installed between the output        end of the rotary kinetic power source (P100) and the input end        of the first transmission device (T101), capable of controlling        the rotary kinetic power source (P100) to control the        transmission or termination of the rotary kinetic power to the        first transmission device (T101); the input end clutch device        (CL101) includes being controlled by manual force or centrifugal        force, or being controlled through the external operation        interface (MI100), and formed as a clutch device or structure        driven by electric force and/or magnetic force and/or mechanical        force and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the input end clutch device (CL101)        can be optionally installed according to actual needs;    -   transmission device (T101): constituted by a transmission device        having fixed speed ratio or variable speed ratio or continuous        variable speed and consisted of mechanical gear sets, or chain        sets or pulley sets or linkage rod sets; installed between the        rotary kinetic power source (P100) and the first epicyclic gear        set (EG101); the transmission device (T101) can be optionally        adopted according to actual needs;    -   first epicyclic gear set (EG101): constituted by an epicyclic        gear set having an input shaft and two output shafts capable of        differentially operating, directly driven by the rotary kinetic        power provided by an engine, or driven by the engine through the        transmission device (T101); the left end output shaft (1011) of        the two output shafts capable of differentially operating is        served to drive the input end of the continuous variable        transmission (CVT100), the right end output shaft (1012) is        served to drive the input end of the continuous variable        transmission (CVT200);    -   continuous variable transmission (CVT100), (CVT200): the        continuous variable transmission (CVT) is e.g. structured by        continuous variable transmissions having several structural        configurations such as a rubber belt type, metal belt type,        chain type continuous variable transmission, or an electric        continuous variable transmission (ECVT), or a friction disk        type, or a conventional different-shaft type continuous variable        transmission, which includes a continuous variable transmission        capable of individually and automatically varying speed ratio        along with the loading torque, or a continuous variable        transmission capable of individually and passively varying speed        ratio automatically along with the driving rotation speed at the        input end and/or the loading torque, or a continuous variable        transmission utilizing the external operation interface (MI100)        to actively control the speed ratio, so as to perform all or a        part of the following controls, including: (1) actively and        synchronously controlling the speed ratios of the continuous        variable transmission (CVT100) and the continuous variable        transmission (CVT200); (2) actively and individually controlling        the speed ratios of the continuous variable transmission        (CVT100) and the continuous variable transmission (CVT200) to be        different for actively controlling the proportion of different        speed ratios between individual continuous variable        transmissions;    -   external operation interface (MI100): constituted by a        mechanical operation device control by manual force or system,        and structured by a linear analog type or digital type or hybrid        type electromechanical device and/or solid state electric        circuit, and provided for directly controlling the rotary        kinetic power source (P100), and/or the operation speed ratios        of the continuous variable transmission (CVT100) and/or the        continuous variable transmission (CVT200), or for controlling        the control unit (ECU100) so as to further control the operation        state of the rotary kinetic power source (P100), and/or control        the operation speed ratios of the continuous variable        transmission (CVT100) and/or the continuous variable        transmission (CVT200);    -   control unit (ECU100): constituted by electromechanical devices        and/or electric circuit components and/or power semiconductors        and/or microprocessors and software, for being connected to an        electric power source (B 100) and controlled by the external        operation interface (MI100) or controlled by the direction        changing signal sensor (S100), operated through the signal of        controlling system operation state, for controlling the        operation state of the rotary kinetic power source (P100),        and/or controlling the operation speed ratios of the continuous        variable transmission (CVT100) and/or the continuous variable        transmission (CVT200);    -   direction changing signal sensor (S100): defined as one or more        than one physical sensors, for detecting signals relative to        direction changing including one or more than one of following        signals: a signal of direction changing degree from the steering        machine, a signal of inclined angle of vehicle body, a signal of        vehicle idling, a signal of upward/downward slope, a signal of        acceleration or deceleration, and together with the signal of        the external operation interface (MI100) to be transmitted to        the control unit (ECU100);    -   stabilize device (SDT100): constituted by a limited slip        differential, or a dual shaft connecting device composed of a        coupling device having slip damp coupling torque, including a        stabilize device with the dual shaft structure configured        through fluid viscous effect, hydrodynamic damp effect,        mechanical friction effect, electromagnetic vortex effect or        power generation reverse torque effect; wherein two rotating        ends thereof are respectively connected between the left side        wheel set (W100) and the right side wheel set (W200) of the        loading end; during the driving operation, if the load varying        at the individual two sides of the loading end causes the        unstable operation, with the slip damp coupling torque of the        stabilize device (SDT100) installed between the wheel sets at        the left and right sides, the operation of the system can be        stabilized; the stabilize device (SDT100) can be optionally        installed according to actual needs;

According to the embodiment disclosed in FIG. 6, the input end or theoutput end of the continuous variable transmission or the input end ofthe wheel set can be further installed with a transmission device,wherein:

-   -   transmission device (T100), (T200): the output end of the        transmission device (T100) is served to drive the left side        wheel set (W100) of the loading end, and the input end thereof        is driven by the rotary kinetic power from the output end of the        continuous variable transmission (CVT100); the output end of the        transmission device (T200) is served to drive the right side        wheel set (W200), and the input end thereof is driven by the        rotary kinetic power from the output end of the continuous        variable transmission (CVT200); the transmission device (T100)        and the transmission device (T200) are consisted of mechanical        gear sets, or chain sets, pulley sets or linkage rod sets, and        structured as a transmission device having fixed speed ratio for        acceleration or deceleration or changing direction or having        switchable multi-step speed ratios, or a manually-operated or        automatic or semi-automatic speed ratio or belt type continuous        variable transmission, or a hydraulic type torque converter; the        transmission devices (T100), (T200) can be optionally installed        according to actual needs;

According to the embodiment disclosed in FIG. 6, between the output endof the continuous variable transmission individually installed onindividual wheel set and the loading end, a clutch device can be furtherinstalled between the output end of the continuous variable transmissionto the transmission chain of the input end of the wheel set used fordistal driving, wherein:

-   -   output end clutch device (CL100), (CL200): the output end clutch        device (CL 100) is installed between the output end of the        continuous variable transmission (CVT100) and the wheel set        (W100) for controlling the continuous variable transmission        (CVT100) to output the rotary kinetic power to the wheel set        (W100), and the output end clutch device (CL200) is installed        between the output end of the continuous variable transmission        (CVT200) and the wheel set (W200) for controlling the continuous        variable transmission (CVT200) to output the rotary kinetic        power to the wheel set (W200); the output end clutch device        (CL100) and the output end clutch device (CL200) include being        controlled by manual force or centrifugal force, or controlled        through the external operation interface (MI100) and the control        unit (ECU100), and formed as a clutch device or structure driven        by electric force and/or magnetic force and/or mechanical force        and/or air pressure and/or hydraulic force for performing        transmission engaging or releasing, and having a rotary input        end and a rotary output end; the output end clutch device can        further includes being driven by electric force and/or magnetic        force and/or mechanical force and/or air pressure and/or        hydraulic force for controlling the coupling torque between        engaging and releasing, e.g. an electromagnetic wet type        multi-plate clutch controlling coupling torque through magnetic        exciting current, or a wet type multi-plate clutch driven by        mechanical force and/or air pressure and/or hydraulic force;

The structure of the output end clutch device (CL100), (CL200) includes:

-   -   (1) a clutch device or structure driven by electric force and/or        magnetic force and/or mechanical force and/or air pressure        and/or hydraulic force for performing transmission engaging or        releasing;    -   (2) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        linearly controlling the continuous coupling torque between        transmission engaging and releasing;    -   (3) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having torque        limited coupling function which is smaller than the engaging        torque, after being released;    -   (4) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is increased while the rotation differential is increased,        after being released;    -   (5) driven by electric force and/or magnetic force and/or        mechanical force and/or air pressure and/or hydraulic force for        performing transmission engaging or releasing, and having a        linear damp function which is smaller than the engaging torque        and is reduced while the rotation differential is increased,        after being released;    -   (6) (1) to (5) including a radial clutch device;    -   (7) (1) to (5) including an axial clutch device;

The output end clutch device (CL100), (CL200) can be optionallyinstalled according to actual needs;

-   -   common load body (L100) can be provided with one or more than        one non-powered wheels according to actual needs;

With the operation of the mentioned devices, when the common load body(L100) is driven to operate by the rotary kinetic power source (P100),and the left side wheel set (W100) and the right side wheel set (W200)of the loading end are operated in differential speeds, the speed ratiosof the continuous variable transmission (CVT100) and the continuousvariable transmission (CVT200) are individually adjusted along with theload varying of the wheel set (W100) and the wheel set (W200) of theloading end, and the two output ends of the first epicyclic gear set(EG101) perform differential operation for adjustment, so as to drive indifferential speed between the input end of the continuous variabletransmission (CVT100) and the input end of the continuous variabletransmission (CVT200).

According to the multi-CVT drive system having epicyclic gear set, thedrive system can be further configured as a co-structure;

FIG. 7 is a block diagram illustrating the structure in which thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), the output end clutch devices (CL100), (CL200),and transmission devices (T100), (T200) being combined at two outputsides of the first epicyclic gear set (EG101), according to oneembodiment of the present invention;

As shown in FIG. 7, which shows the co-structure in which the continuousvariable transmission (CVT100) and the continuous variable transmission(CVT200), the output end clutch devices (CL100), (CL200), thetransmission devices (T100), (T200) are combined at the two output endsof the first epicyclic gear set (EG101).

FIG. 8 is a schematic view illustrating FIG. 7 being installed with adirection changing signal sensor (S100) to send a signal to the controlunit (ECU100) for controlling the relative speed ratio switching of thecontinuous variable transmission (CVT100) and the continuous variabletransmission (CVT200), according to one preferred embodiment of thepresent invention.

As shown in FIG. 8, the signal of the direction changing signal sensor(S100) is sent to the control unit (ECU100) for controlling the relativespeed ratio switching of the continuous variable transmission (CVT100)and the continuous variable transmission (CVT200), wherein:

-   -   direction changing signal sensor (S100): defined as one or more        than one physical sensors, for detecting signals relative to        direction changing including one or more than one of following        signals: a signal of direction changing degree from the steering        machine, a signal of inclined angle of vehicle body, a signal of        vehicle idling, a signal of upward/downward slope, a signal of        acceleration or deceleration, and together with the signal of        the external operation interface (MI100) to be transmitted to        the control unit (ECU100);

What shall be explained is that FIG. 1 to FIG. 7 and FIG. 8 are examplesof the multi-CVT drive system having epicyclic gear set, when beingapplied to adopt more loading end wheel sets, the same means discloseabove can be applied.

According to the multi-CVT drive system having epicyclic gear set, anoutput end transmission device composed of a stepped or continuousvariable transmission having fixed speed ratio for acceleration ordeceleration or direction changing can be further installed between theoutput end of the first transmission device (T101) and the individualloading end wheel set; the mentioned output end transmission device iscomposed of mechanical gear sets, or chain sets, pulley sets or linkagerod sets, and structured as a transmission device having fixed speedratio for acceleration or deceleration or direction changing, or amanually-operated or automatic or semi-automatic speed ratio or belttype continuous variable transmission, or a hydraulic type torqueconverter.

According to the multi-CVT drive system having epicyclic gear set, thelocation where the output end clutch device being individually installedbetween the output end of the first transmission device (T101) to theindividual transmission wheel system of individual loading end wheel setincludes one or more than one of followings, including:

-   (1) installed between the output end of the first transmission    device (T101) and the input end of the individual output end    transmission device;-   (2) installed at the input end of the output end transmission    device;-   (3) installed at the output end of the output end transmission    device;-   (4) installed in series between internal power transmission set of    the individual output end transmission device;-   (5) installed at the input end of the loading end wheel set;

The mentioned output end clutch device include being controlled bymanual force or centrifugal force, or controlled through the externaloperation interface, and driven by electric force and/or magnetic forceand/or mechanical force and/or air pressure and/or hydraulic force forperforming transmission engaging or releasing, and having a rotary inputend and a rotary output end.

According to the multi-CVT drive system having epicyclic gear set, aflexible transmission device composed of the limited slip differentialor the dual shaft connecting device having slip coupling torque can befurther installed at the opposite locations horizontally and coaxiallyat two sides along the driving direction of the common load body (L100)and between the same transmission operation sets; when the differentialoperation is performed between the wheel shaft and wheel set at the leftside and the wheel shaft and wheel set at the right side combined to thedual shafts of the flexible transmission device, e.g. the differentialoperation performed by the flexible transmission device while the commonload body (L100) is making a turn, through releasing the output endclutch device between the inner wheel set and the first transmissiondevice (T101), the outer wheel set having high rotational speed performsthe flexible transmission with rotation differential to the inner wheelset having low rotational speed through the flexible transmissiondevice, such that the rotational speed of the inner wheel set is lowerthan that of the outer wheel set but still has the driving power; theflexible transmission device includes the coupling torque dual shaftconnecting device composed of the coupling device have slip damp, e.g. aflexible transmission device formed with a dual shaft structure throughfluid viscous effect, hydrodynamic damp effect, mechanical frictioneffect, electromagnetic vortex effect or power generation reverse torqueeffect, two rotating ends are respectively combined at: one or more thanone of opposite locations horizontally and coaxially defined on thefollowing transmission operation sets, including:

-   (1) installed between the wheel shaft connecting the wheel set at    the left side and the wheel set at the right side of the common load    body (L100);-   (2) installed between the opposite input ends of the output end    transmission devices at the left and the right sides of the common    load body (L100);-   (3) installed between the opposite output ends of the output end    clutch devices at the left and the right sides of the common load    body (L100);-   (4) installed between the transmission components having the same    rotational speed while being in the normal straight running state in    the transmission wheel system of the output end transmission devices    at the left and the right sides of the common load body (L100).

According to the multi-CVT drive system having epicyclic gear set, thelimited slip differential or the flexible transmission device composedof the dual shaft connecting devices having slip coupling torqueinstalled at the opposite locations horizontally and coaxially definedat two sides along the driving direction of the common load body (L100)and between the installed wheel sets and the drive operation sets can beall or partially installed.

The invention claimed is:
 1. A multi-CVT drive system, comprising: arotary kinetic power source (P100); an epicyclic gear set (EG101) havinga left output shaft (1011) and a right output shaft (1012); a firstcontinuously variable transmission (CVT 100) and a second continuouslyvariable transmission (CVT200) , wherein rotary kinetic power output bythe rotary kinetic power source (P100) drives the epicyclic gear set(EG101) and said first and second continuously variable transmissions(CVT100,CVT200) are respectively installed between the left end outputshaft (1011) and the right end output shaft (1012) of the epicyclic gearset (EG101) and respective individual loads including wheel sets (W100,W200), the respective individual loads being driven by respectiveones of the two output shafts (1011,1012), so that the wheel sets (W100,W200) of the individual loads driven by the two output shafts(1011,1012) are enabled to perform variation of the driving speed ratioand the driving torque and drive a combined common load body (L100); anexternal operation interface (MI100) for controlling at least one of therotary kinetic power source (P100) and respective speed ratios of thefirst and second continuously variable transmissions (CVT100,CVT200);and a stabilizer device (SDT100) composed of one of a limited slipdifferential and a dual shaft connecting device having slip couplingtorque and connected to the drive system at the following horizontallyand coaxially opposite locations on two sides of the common load body(L100), such that when a differential operation is performed between thetwo individual loads including wheel sets (W100,W200), the stabilizerdevice (SDT100) stabilizes operation of the drive system, the slipcoupling torque being provided by one of a viscous fluid effect,hydrodynamic damping effect, mechanical friction effect, electromagneticvortex effect, and power generation reverse torque effect, and thestabilizer device (SDT 100) being installed at left and right sides ofthe common load body (L100), wherein when the common load body (L100) isdriven to operate by the rotary kinetic power source (P100), and thefirst wheel set (W100) and the second wheel set (W200) are operated indifferent speeds, the speed ratios of the first continuously variabletransmission (CVT100) and the second continuously variable transmission(CVT200) are individually adjusted in response to load variation of thefirst wheel set (W100) and the second wheel set (W200) of the loadingend according to at least one of the following adjustment modes: (a)respective speed ratios of the first continuously variable transmission(CVT100) and the second continuously variable transmission (CVT200) atthe two output ends of the epicyclic gear set (EG101) being passively orautomatically adjusted along with the driving rotation speed at theinput end and/or the loading torque, (b) the operation interface (MI100)being used to actively control individual speed ratio adjustmentsbetween the first continuously variable transmission (CVT100) and thesecond continuously variable transmission (CVT200), and (c) respectivespeed ratios of the first continuously variable transmission (CVT100)and the second continuously variable transmission (CVT200) at the twooutput ends of the epicyclic gear set (EG101) being passively orautomatically adjusted along with the driving rotation speed at theinput end and/or the loading torque, and the operation interface (MI100)further being used to actively control individual speed ratioadjustments between the first continuously variable transmission(CVT100) and the second continuously variable transmission (CVT200). 2.A multi-CVT drive system as claimed in claim 1, wherein said stabilizerdevice (SDT100) is installed in one of the following configurations: (1)between rotating parts of the wheel sets (W100,W200) oppositely at theleft side and the right side; (2) between opposite output ends of thefirst and second continuously variable transmissions (CVT100,CVT200) atthe left side and the right side; (3) between opposite output ends ofclutch devices (CL100,CL200) at the left side and the right side; (4)between input ends or output ends of respective left side and right sidetransmission devices (T100,T200) oppositely at the left side and theright side; (5) between a left side rotating part of one of the wheelsets (W100) and a right side rotating part of another of the wheel sets(W200).
 3. A multi-CVT drive system as claimed in claim 1, wherein thecommon load body (L100) is a frame body of a vehicle, on which isinstalled the rotary kinetic power source (P100), correspondingoperation and transmission interface devices, and at least the loadingwheel sets (W100,W200) driven by the rotary kinetic power source (P100).4. A multi-CVT drive system as claimed in claim 1, wherein said firstand second continuously variable transmissions (CVT100,CVT200) includeat least one of a rubber belt type continuously variable transmission,metal belt type continuously variable transmission, chain typecontinuously variable transmission, electric continuously variabletransmission (ECVT), friction disk type continuously variabletransmission, and different-shaft type continuously variabletransmission.
 5. A multi-CVT drive system as claimed in claim 1, furthercomprising at least one transmission device (T100,T101,T200), eachhaving one of a fixed speed ratio for acceleration, deceleration, orchanging direction, and including one of a manually-operated, automatic,semi-automatic speed-ratio-varying, or belt type continuously variabletransmission and a hydraulic torque converter, said at least onetransmission device (T100,T101,T200) including at least one of amechanical gear set, chain set, pulley set, and linkage rod set, andsaid at least one transmission device (T100,T101,T200) being installedat one or more of the following locations: (1) at input ends of thefirst and second continuously variable transmissions (CVT100,CVT200);(2) at output ends of the first and second continuously variabletransmissions (CVT100,CVT200); (3) at input ends of clutch devices, saidclutch devices including a clutch device on a left side (CL100) and aclutch device on a right side (CL200); (4) at an output end of one ofthe clutch devices (CL101); and (5) at input ends of the wheel sets(W100,W200) at a loading end.
 6. A multi-CVT drive system as claimed inclaim 1, further comprising at least one clutch device(CL100,CL101,CL200), wherein said at least one clutch device is a manualclutch device, a centrifugal clutch device, or a clutch devicecontrolled by an operation interface (MI100) that engages or release anoutput end of the at least one clutch device (CL100,CL101,CL200) by atleast one of an electric force, magnetic force, mechanical force,pneumatic pressure, and hydraulic force, one or more of said at leastone clutch device (CL100,CL101,CL200) being installed at one of thefollowing locations: (1) at the input ends of the continuously variabletransmissions (CVT100,CVT200); (2) at an output end of the rotarykinetic power source (P100); (3) at the output ends of the continuouslyvariable transmissions (CVT100,CVT200); (4) at an input end of at leastone first transmission device (T101); (5) at output ends of left sideand right side transmission devices (T100,T200); (6) at the input endsof the wheel sets (W100,W200) at the loading end.
 7. A multi-CVT drivesystem as claimed in claim 1, wherein the rotary kinetic power source(P100) is one of an internal combustion engine, external combustionengine, spring power source, hydraulic power source, pneumatic powersource, flywheel power source, manually driven power source, wind powersource, and power source composed of an AC or DC, brush or brushless,synchronous or non-synchronous, internal rotating or external rotatingtype rotary motor installed with relative control devices and suppliedwith electricity by at least one of an electrical power supply andelectrical storage device.
 8. A multi-CVT drive system as claimed inclaim 1, further comprising a third continuously variable transmission(CVT300) installed between the left end output shaft (1011) of theepicyclic gear set (EG101) and a third wheel set (W300) at a front leftside of the loading end of the common load body (L100), and fourthcontinuously variable transmission (CVT400) installed between the rightend output shaft (1012) and a fourth wheel set (W400) at the front rightside of the loading end of the common load body (L100), wherein anoutput end of the third continuously variable transmission (CVT300)drives the third wheel set (W300) at the left side of the loading end,and the input end of the third continuously variable transmission(CVT300) is driven by the rotary kinetic power from the left end outputshaft (1011) at the output end of the epicyclic gear set (EG101); theoutput end of the fourth continuously variable transmission (CVT400)drives the fourth wheel set (W400) at the right side, and the input endof the fourth continuously variable transmission (CVT400) is driven bythe rotary kinetic power from the right end output shaft (1012) at theoutput end of the epicyclic gear set (EG101).
 9. A multi-CVT drivesystem as claimed in claim 8, further comprising third and fourth outputend transmission devices (T300,T400) installed at one or more of thefollowing locations: (1) at input ends of the third and fourthcontinuously variable transmissions (CVT300,CVT400); (2) at output endsof the third and fourth continuously variable transmissions(CVT300,CVT400); (3) at input ends of third and fourth output end clutchdevices on the left and right side (CL300,CL400); and (4) at input endsof the third and fourth wheel sets (W300,W400) at a loading end, andwherein at least one of said third and fourth output end clutch devices(CL300, CL400) is one of a manual or centrifugal clutch device, and aclutch controlled by an operation interface (MI100) that engages orrelease an output end of the at least one of the third and fourth clutchdevices (CL300,CL400) by at least one of an electric force, magneticforce, mechanical force, pneumatic pressure, and hydraulic force, one ormore of said at least one clutch devices (CL300,CL400) being installedat one of the following locations: (1) at the input ends of the thirdand fourth continuously variable transmissions (CVT300,CVT400); (2) atthe output ends of the third and fourth continuously variabletransmissions (CVT300,CVT400); (3) at output ends of the third andfourth output end transmission devices (T300,T400); (4) at the inputends of the third and fourth wheel sets (W300,W400) at the loading end.10. A multi-CVT drive system as claimed in claim 9, further comprising asecond stabilizer device (STD200) composed of one of a limited slipdifferential and a dual shaft connecting device having slip couplingtorque and connected to the drive system at the following horizontallyand coaxially opposite locations on two sides of front end of the commonload body (L100), such that when a differential operation is performedbetween the two individual loads including wheel sets (W300,W400), thesecond stabilizer device (SDT200) stabilizes operation of the drivesystem, the slip coupling torque being provided by one of a viscousfluid effect, hydrodynamic damping effect, mechanical friction effect,electromagnetic vortex effect, and power generation reverse torqueeffect, and the stabilizer device (SDT200) being installed between partsof driving system at left and right sides of the common load body (L100)in one of the following configurations: (1) between rotating parts ofthe third and fourth wheel sets (W300,W400) oppositely at the left sideand the right side; (2) between opposite output ends of the third andfourth continuously variable transmissions (CVT300,CVT400) at the leftside and the right side; (3) between opposite output ends of said thirdand fourth output end clutch devices (CL300,CL400) at the left side andthe right side; (4) between input ends or output ends of said third andfourth output end transmission devices (T300,T400) oppositely at theleft side and the right side; (5) between a left side rotating part ofthe third wheel set (W300) and a right side rotating part of the fourthwheel set (W400).
 11. A multi-CVT drive system as claimed in claim 1,further comprising a direction changing signal sensor (S 100) and anelectronic control unit (ECU100) connected to first, second, third, andfourth continuously variable transmissions (CVT100,CVT200,CVT300,CVT400)for receiving a direction changing signal from the direction changingsignal sensor (S 100) and controlling relative speed ratio switchingbetween the first, second, third, and fourth continuously variabletransmissions (CVT100,CVT200,CVT300,CVT400) in response to detection ofa direction change by the direction changing signal sensor (S 100). 12.A multi-CVT drive system as claimed in claim 1, further comprising asecond epicyclic gear set (EG102) connected between the first epicyclicgear set (EG101) and a first transmission device (T101), said secondepicyclic gear set (EG102) including a second left end output shaft(1021) and a second right end output shaft (1022), and furthercomprising a third continuously variable transmission (CVT300) installedbetween the second left end output shaft (1021) of the second epicyclicgear set (EG102) and a third wheel set (W300) at a front left side ofthe loading end of the common load body (L100), and fourth continuouslyvariable transmission (CVT400) installed between the second right endoutput shaft (1022) and a fourth wheel set (W400) at the front rightside of the loading end of the common load body (L100), wherein anoutput end of the third continuously variable transmission (CVT300)drives the third wheel set (W300) at the left side of the loading end,and the input end of the third continuously variable transmission(CVT300) is driven by the rotary kinetic power from the second left endoutput shaft (1021) at the output end of the second epicyclic gear set(EG102); the output end of the fourth continuously variable transmission(CVT400) drives the fourth wheel set (W400) at the right side, and theinput end of the fourth continuously variable transmission (CVT400) isdriven by the rotary kinetic power from the second right end outputshaft (1022) at the output end of the second epicyclic gear set (EG102).13. A multi-CVT drive system as claimed in claim 12, further comprisinga direction changing signal sensor (S 100) and an electronic controlunit (ECU100) connected to first, second, third, and fourth continuouslyvariable transmissions (CVT100,CVT200,CVT300,CVT400) for receiving adirection changing signal from the direction changing signal sensor (S100) and controlling relative speed ratio switching between the first,second, third, and fourth continuously variable transmissions(CVT100,CVT200,CVT300,CVT400) in response to detection of a directionchange by the direction changing signal sensor (S 100).
 14. A multi-CVTdrive system as claimed in claim 12, further comprising third and fourthoutput end transmission devices (T300,T400) each having one of a fixedspeed ratio for acceleration, deceleration, or changing direction, amanually-operated, automatic, or semi-automatic speed-ratio-varyingcontinuously variable transmission, and a hydraulic torque converter,said third and fourth output end transmission devices (T300,T400) beinginstalled at one or more of the following locations: (1) at input endsof the third and fourth continuously variable transmissions(CVT300,CVT400); (2) at output ends of the third and fourth continuouslyvariable transmissions (CVT300,CVT400); (3) at input ends of third andfourth output end clutch devices on the left and right side(CL300,CL400); and (4) at input ends of the third and fourth wheel sets(W300,W400) at a loading end, and wherein at least one of said third andfourth output end clutch devices (CL300, CL400) is one of a manual orcentrifugal clutch device, and a clutch controlled by an operationinterface that engages or release an output end of the at least one ofthe third and fourth clutch devices (CL300,CL400) by at least one of anelectric force, magnetic force, mechanical force, pneumatic pressure,and hydraulic force, one or more of said at least one clutch devices(CL300,CL400) being installed at one of the following locations: (1) atthe input ends of the third and fourth continuously variabletransmissions (CVT300,CVT400); (2) at the output ends of the third andfourth continuously variable transmissions (CVT300,CVT400); (3) atoutput ends of the third and fourth output end transmission devices(T300,T400); (4) at the input ends of the third and fourth wheel sets(W300,W400) at the loading end.
 15. A multi-CVT drive system as claimedin claim 14, further comprising a second stabilizer device (STD200)composed of one of a limited slip differential and a dual shaftconnecting device having slip coupling torque and connected to the drivesystem at the following horizontally and coaxially opposite locations ontwo sides of front end of the common load body (L100), such that when adifferential operation is performed between the two individual loadsincluding wheel sets (W300,W400), the second stabilizer device (SDT200)stabilizes operation of the drive system, the slip coupling torque beingprovided by one of a viscous fluid effect, hydrodynamic damping effect,mechanical friction effect, electromagnetic vortex effect, and powergeneration reverse torque effect, and the stabilizer device (SDT200)being installed between parts of driving system at left and right sidesof the common load body (L100) in one of the following configurations:(1) between rotating parts of the third and fourth wheel sets(W300,W400) oppositely at the left side and the right side; (2) betweenopposite output ends of the third and fourth continuously variabletransmissions (CVT300,CVT400) at the left side and the right side; (3)between opposite output ends of the third and fourth output end clutchdevices (CL300,CL400) at the left side and the right side; (4) betweeninput ends or output ends of the third and fourth output endtransmission devices (T300,T400) oppositely at the left side and theright side; (5) between a left side rotating part of the third wheel set(W300) and a right side rotating part of the fourth wheel set (W400).16. A multi-CVT drive system as claimed in claim 14, wherein the thirdcontinuously variable transmission (CVT300) is installed between thesecond left end output shaft (1021) of the second epicyclic gear set(EG102) and the third wheel set (W300) and the fourth continuouslyvariable transmissions (CVT400) is installed between the second rightend output shaft (1022) of the second epicyclic gear set (EG 102) andthe third wheel sets (W400), thereby forming a drive system capable ofbeing operated at different speeds and in a variable speed state,wherein: the second left end output shaft (1021) of the second epicyclicgear set (EG102) drives the input end of the third continuously variabletransmission (CVT300), and the second right end output shaft (1022) ofthe epicyclic gear set (EG102) drives the input end of the fourthcontinuously variable transmission (CVT400); the output end of the thirdcontinuously variable transmission (CVT300) drives the third wheel set(W300) and the output end of the fourth continuously variabletransmission (CVT400) drives the fourth wheel set (W400); the operationinterface (MI100) directly controls at least one of the rotary kineticpower source (P100) and operation speed ratios of the third continuouslyvariable transmission (CVT300), operation speed ratios of the fourthcontinuously variable transmission (CVT400), or controls at least one ofthe rotary kinetic power source (P100) and speed ratios of the third andfourth continuously variable transmissions (CVT300,CVT400); an outputend of the third output end transmission device (T300) drives the thirdwheel set (W300), and the input end thereof is driven by the rotarykinetic power from the output end of the third continuously variabletransmission (CVT300); an output end of the fourth output endtransmission device (T400) drives the fourth wheel set (W400), and theinput end thereof is driven by the rotary kinetic power from the outputend of the fourth continuously variable transmission (CVT400); saidthird output end transmission device (T300) and fourth output endtransmission device (T400) being configured to be controlled by manualforce or by the operation interface (MI100), configured to automaticallychange speed ratios in response to at least one of a driving rotationalspeed or a loading torque; an output end of the third output end clutchdevice (CL300) is installed between the output end of the thirdcontinuously variable transmission (CVT300) and the third wheel set(W300) for controlling the third continuously variable transmission(CVT300) to output the rotary kinetic power to the third wheel set(W300), and an output end of the fourth output end clutch device (CL400)being installed between the output end of the fourth continuouslyvariable transmission (CVT400) and the fourth wheel set (W400) forcontrolling the fourth continuously variable transmission (CVT400) tooutput the rotary kinetic power to the fourth wheel set (W400).
 17. Amulti-CVT drive system as claimed in claim 16, wherein when the commonload body (L100) is driven to operate by the rotary kinetic power source(P100), and the third wheel set (W300) and the fourth wheel set (W400)are operated in different speeds, the speed ratios of the thirdcontinuously variable transmission (CVT300) and the fourth continuouslyvariable transmission (CVT400) are individually adjusted in response toload variation of the third wheel set (W300) and the fourth wheel set(W400) of the loading end, and the two output ends of the secondepicyclic gear set (EG102) perform differential operation adjustment todifferentially drive the input ends of the third continuously variabletransmission (CVT300) and the fourth continuously variable transmission(CVT400), or the operation interface (MI100) is used to control theoperation interface (MI100) so as to control the individual speed ratioadjustments between the third continuously variable transmission(CVT300) and the fourth continuously variable transmission (CVT400). 18.A multi-CVT drive system as claimed in claim 1, wherein the common loadbody (L100) is further installed with non-powered wheels not beingdriven by the rotary kinetic power source (P100).
 19. A multi-CVT drivesystem as claimed in claim 1, further comprising a direction changingsignal sensor (S 100) and an electronic control unit (ECU100) connectedto first and second continuously variable transmissions (CVT100,CVT200)for receiving a direction changing signal from the direction changingsignal sensor (S 100) and controlling relative speed ratio switchingbetween the first and second continuously variable transmissions(CVT100,CVT200) in response to detection of a direction change by thedirection changing signal sensor (S 100).
 20. A multi-CVT drive systemas claimed in claim 19, wherein the common load body (L100) is a framebody of a vehicle and the direction changing signal sensor (S 100)detects at least one of: a steering direction; an angle of inclinationof the vehicle, idling of the vehicle, a slope on which the vehicle issituated, acceleration or deceleration of the vehicle, said directionchanging signal being transmitted to the electronic control unit(ECU100) together with a external operation signal from the externaloperation interface (MI100).